/**
 * Mobile Optimizations CSS
 * Enhanced mobile experience styles for JMA PWA
 */

/* iOS-specific styles */
.ios {
    --safe-area-top: env(safe-area-inset-top);
    --safe-area-bottom: env(safe-area-inset-bottom);
    --safe-area-left: env(safe-area-inset-left);
    --safe-area-right: env(safe-area-inset-right);
}

.ios-status-bar-spacer {
    height: var(--safe-area-top);
    background: var(--bg-color);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

/* Android-specific styles */
.android {
    --nav-bar-height: 48px;
}

/* PWA mode styles */
.pwa-mode {
    /* Enhanced PWA experience */
    --app-padding-top: calc(var(--safe-area-top, 0px) + 20px);
    --app-padding-bottom: calc(var(--safe-area-bottom, 0px) + 20px);
}

.pwa-mode .main-content {
    padding-top: var(--app-padding-top);
    padding-bottom: var(--app-padding-bottom);
}

/* Touch optimizations */
button, .clickable, .touch-target {
    min-height: var(--touch-target-min-size, 44px);
    min-width: var(--touch-target-min-size, 44px);
    touch-action: manipulation;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
}

/* Prevent text selection on UI elements */
.no-select {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* Optimize scrolling */
.smooth-scroll {
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}

/* Landscape mode adjustments */
.landscape .player-controls {
    flex-direction: row;
    justify-content: space-between;
    padding: 8px 16px;
}

.landscape .player-info {
    flex: 1;
    margin-right: 16px;
}

/* Keyboard open adjustments */
.keyboard-open {
    /* Adjust layout when virtual keyboard is open */
}

.keyboard-open .bottom-navigation {
    display: none;
}

.keyboard-open .player-controls {
    position: relative;
    bottom: auto;
}

/* Background mode optimizations */
.background-mode {
    /* Reduce visual complexity when in background */
}

.background-mode .animation {
    animation-play-state: var(--animation-play-state, paused);
}

.background-mode .non-essential {
    display: none;
}

/* Scrolling optimizations */
.scrolling-down .header {
    transform: translateY(-100%);
    transition: transform 0.3s ease-in-out;
}

.scrolling-down .bottom-navigation {
    transform: translateY(100%);
    transition: transform 0.3s ease-in-out;
}

/* Network-aware styles */
.slow-connection .high-quality-image {
    display: none;
}

.slow-connection .low-quality-image {
    display: block;
}

.slow-connection .animation {
    animation: none;
}

/* Install banner */
.install-banner {
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    background: var(--accent-color);
    color: white;
    padding: 16px;
    border-radius: 8px;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.3s ease-out;
}

.install-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.install-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s;
}

.install-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.dismiss-btn {
    background: none;
    border: none;
    color: white;
    font-size: 18px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background 0.2s;
}

.dismiss-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Mobile viewport optimizations */
@media screen and (max-width: 768px) {
    /* Reduce margins and padding on mobile */
    .container {
        padding: 12px;
    }
    
    .card {
        margin-bottom: 12px;
    }
    
    /* Optimize button sizes for touch */
    .btn {
        padding: 12px 16px;
        font-size: 16px;
    }
    
    /* Improve text readability */
    body {
        font-size: 16px;
        line-height: 1.5;
    }
    
    /* Optimize form inputs */
    input, textarea, select {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 12px;
        border-radius: 8px;
    }
}

/* High DPI display optimizations */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .icon {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark mode optimizations for mobile */
@media (prefers-color-scheme: dark) {
    .mobile-optimized {
        /* Reduce contrast for better battery life on OLED */
        --bg-color: #0a0a0a;
        --text-color: #e0e0e0;
        --border-color: #333;
    }
}

/* Battery optimization styles */
.battery-saver {
    /* Reduce visual effects when battery is low */
    --animation-duration: 0s;
    --transition-duration: 0s;
}

.battery-saver .gradient {
    background: var(--bg-color);
}

.battery-saver .shadow {
    box-shadow: none;
}

/* Performance optimization classes */
.gpu-accelerated {
    transform: translateZ(0);
    will-change: transform;
}

.no-gpu-acceleration {
    will-change: auto;
    transform: none;
}

/* Loading states optimized for mobile */
.mobile-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    font-size: 14px;
    color: var(--text-secondary);
}

.mobile-loading .spinner {
    width: 24px;
    height: 24px;
    margin-right: 8px;
}

/* Error states optimized for mobile */
.mobile-error {
    padding: 16px;
    text-align: center;
    background: rgba(255, 0, 0, 0.1);
    border: 1px solid rgba(255, 0, 0, 0.2);
    border-radius: 8px;
    margin: 16px 0;
}

.mobile-error .retry-btn {
    margin-top: 12px;
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
}

/* Accessibility improvements for mobile */
@media (max-width: 768px) {
    .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
    }
    
    /* Focus indicators for keyboard navigation */
    button:focus,
    input:focus,
    select:focus,
    textarea:focus {
        outline: 2px solid var(--accent-color);
        outline-offset: 2px;
    }
}